Human sex cells, or gametes, are produced early in the developing embryo. ... They initially develop only body (somatic) cells, each with a full complement of chromosomes. When the time comes to mate, they produce their sex cells, or gametes, as needed by forming them out of stem cells from adult tissue.
Answer:
It keeps the eggs warm until they hatch.
Explanation:
When the goal is for eggs to hatch and new chicks are born, a favorable environment is needed at an indicated temperature.
Placing the eggs under a warm lamp is an option to replace the hen that keeps them warm sitting on them.
Explanation:
Adenosine triphosphate energy